US20220166046A1 - Clamping and holding apparatus - Google Patents

Clamping and holding apparatus Download PDF

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Publication number
US20220166046A1
US20220166046A1 US17/594,002 US202017594002A US2022166046A1 US 20220166046 A1 US20220166046 A1 US 20220166046A1 US 202017594002 A US202017594002 A US 202017594002A US 2022166046 A1 US2022166046 A1 US 2022166046A1
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US
United States
Prior art keywords
clamping
holding apparatus
carrier
article
clamping means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US17/594,002
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English (en)
Inventor
Tim Fiß
Philipp Freiheit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ContiTech Antriebssysteme GmbH
Original Assignee
ContiTech Antriebssysteme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ContiTech Antriebssysteme GmbH filed Critical ContiTech Antriebssysteme GmbH
Assigned to CONTITECH ANTRIEBSSYSTEME GMBH reassignment CONTITECH ANTRIEBSSYSTEME GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FISS, TIM, Freiheit, Philipp
Publication of US20220166046A1 publication Critical patent/US20220166046A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/248—Means for compression of the fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the invention relates to a clamping and holding apparatus for an article fixed under preload by at least one clamping means, preferably for a container of variable volume.
  • Clamping devices for securely clamping any desired article, such as for example an article of variable volume in the form of a tank or container, are known.
  • DE 10 2006 059977 A1 discloses a profile base for a clamping element of a fuel tank, said profile base being intended to prevent the transmission of vibrations from the body and to allow a certain change in volume.
  • clamping devices are required that are suitable for high preload forces in the range of several kilonewtons per clamping element.
  • Such clamping elements should on the one hand offer a high level of security against breakage or tearing, but on the other hand allow, through resilient properties, a not inconsiderable positive as well as negative expansion travel of the clamped element, without thereby leaving a permitted tolerance band of the clamping force.
  • only clamping elements in the form of steel bands are known for such applications, which are optionally acted upon by steel spring assemblies.
  • the object of the invention was therefore to provide a clamping and holding apparatus in which the steel bands, which have intrinsically little extensibility, and expensive steel spring assemblies can be dispensed with.
  • the object was to achieve advantages in terms of installation space, dead weight and costs with an at least comparable resilient clamping action on the element to be clamped.
  • the clamping and holding apparatus has a clamping frame or carrier assigned to the article, and also a clamping device, assigned to the clamping frame or carrier, for the clamping means, the clamping frame or carrier being provided with guide or directing devices for the clamping means and being able to be connected by said clamping means to the article so as to provide a preload force, the clamping means being composed of at least one endless belt composed of elastomer material which wraps around the article and at least parts of the clamping frame or carrier and the wraparound length of which is variable by means of the clamping device.
  • the design according to the invention solves this in that, on the one hand, the elastic clamping action of a conventional belt is used to compensate for changes in volume of the element to be clamped and the latter is still kept under preload, wherein, on the other hand, a clamping device for the clamping means or the endless belt is provided, which varies the original wraparound length of the clamping means configured in the form of an endless belt.
  • such a clamping device or a clamping lock achieves the task of assembly in such a way that the clamping belt can firstly be placed, in a slack and preload-free manner, with an excess length around the element to be clamped, that is to say the article, before the clamping device shortens the effective length, that is to say the wraparound length, of the clamping belt and thus applies the desired preload.
  • the preload can be set precisely, for example via the applied torque on a clamping device that is clampable by rotation, as explained further below.
  • the clamping means is configured in the form of an endless drive belt with tension members extending in its longitudinal direction, preferably in the form of a flat belt.
  • Such drive belts, and in particular flat belts can be attached to the article to be clamped in a simple manner and can be produced with their length geared toward this. There is thus also the possibility of using conventional standard parts.
  • a further advantageous embodiment consists in that a plurality of clamping means which lie next to one another and the wraparound length of which is variable by means of the clamping device are provided. Such an embodiment makes it possible to realize relatively large clamping forces and also achieve a uniform distribution of force and pressure in relation to the article surface.
  • a further advantageous embodiment that is particularly easy to implement and produce consists in that the clamping device is configured in the form of a rotary knob.
  • a further advantageous embodiment consists in that the rotary knob is configured in the form of a fork which is mounted in the clamping device so as to be rotatable about an axis oriented perpendicularly with respect to the longitudinal axis of the clamping means and which encompasses the clamping means in such a way that during rotation of the fork, the clamping means is wound up and its wraparound length can be reduced.
  • the clamping means configured in the form of a drive belt is encompassed or surrounded by at least two fork prongs in a simple manner and its wraparound length can thus easily be shortened by a rotation about the longitudinal axis of the knob, as can also be seen in the exemplary embodiments described further below.
  • a further advantageous embodiment consists in that a predetermined torque can be applied to the rotary knob.
  • a further advantageous embodiment consists in that the clamping device is provided with a fixing device, with the aid of which the position of the clamping device can be fixed after a certain preload or a certain angle of rotation has been reached.
  • a fixing device for example, in the case of a rotary knob, this can be done by a screw guided in a rotary slot.
  • a further advantageous embodiment consists in that the clamping device for the clamping means is configured such that the article is connectable to the clamping frame or carrier so as to provide a resiliently supported preload force.
  • the clamping device for the clamping means is configured such that the article is connectable to the clamping frame or carrier so as to provide a resiliently supported preload force.
  • a particularly advantageous application of the clamping and holding apparatus according to the invention results from its use in a fuel cell fixed under preload by at least one clamping means, preferably a fuel cell pack made up of individual fuel cells connected to one another in a modular manner.
  • the advantages in terms of small installation space, low weight and easy interchangeability come to bear to a particular extent here.
  • FIG. 1 shows a clamping and holding apparatus according to the invention for a fuel cell pack fixed by a plurality of clamping means
  • FIG. 2 shows the clamping frame or carrier shown in FIG. 1 in detail
  • FIG. 3 shows the clamping device configured in the form of a rotary knob shown in FIG. 1 in detail
  • FIG. 4 shows the functioning of the clamping and holding apparatus according to the invention by comparing the non-clamped state with the clamped state
  • FIG. 5 shows the functioning when fixing the stress state of the clamping and holding apparatus according to the invention, also by comparing the non-clamped state with the clamped state
  • FIG. 6 shows a further embodiment of a clamping and holding apparatus according to the invention, in which the clamping device is acted upon by a spring assembly.
  • FIG. 1 shows a clamping and holding apparatus 100 according to the invention for a fuel cell pack 1 fixed under preload by a plurality of clamping means 4 in the clamped state.
  • the fuel cell pack is composed of a plurality of fuel cells that are connectable to one another in a modular manner.
  • the clamping and holding apparatus has a clamping frame or carrier 3 assigned to the fuel cell pack 1 , and also a clamping device 5 , assigned to the clamping frame or carrier, for the clamping means 4 , a plurality of clamping means 4 being provided in this embodiment, namely three endless, closed, commercially available flat belts with tension members extending in their respective longitudinal direction.
  • the tension members are not illustrated in any more detail here.
  • each of the clamping means 4 is provided for a fuel cells connected to one another in a modular manner.
  • the clamping frame or carrier 3 is shown again in detail in FIG. 2 .
  • the clamping frame or carrier is provided with guide or directing devices 6 for the clamping means 4 , which are configured in the form of flat belts, and is shaped such that the article, here the fuel cell pack 1 or the individual fuel cells connected to one another in a modular manner, can be inserted into the clamping frame or carrier 3 by way of its upper part/upper region and then the fuel cell pack 1 is fixed on or in the clamping frame or carrier 3 by means of the preload force.
  • the volume-variable fuel cell pack 1 to be clamped is thus held under preload on its upper side by the clamping frame or carrier 3 and in all other directions by the three clamping means 4 configured in the form of flat belts. Changes in volume are accommodated by the elastic elongation of the clamping means 4 configured in the form of flat belts along their spring characteristic curves.
  • the flat belts are composed of coiled strength members which are embedded in an elastomer matrix, here in ethylene propylene diene elastomer (EPDM), in order to meet all requirements with regard to the temperature loads and elasticity requirements for a fuel cell pack.
  • EPDM ethylene propylene diene elastomer
  • clamping means 4 configured in the form of flat belts
  • these are placed in non-clamped form over the clamping frame or carrier 3 into the cutouts or guide or directing devices 6 provided for this purpose.
  • the clamping frame or carrier 3 rests in this case on the fuel cell pack 1 to be clamped or on the individual fuel cells connected to one another in a modular manner, while the clamping means 4 , which are configured with a corresponding length, are simply pushed over both components.
  • the clamping means 4 configured in the form of flat belts then wrap around the fuel cell pack 1 and the clamping frame or carrier 3 . Their respective wraparound length is variable by means of the clamping device 5 .
  • the clamping device 5 configured here in the form of a rotary knob, is shown again in detail in FIG. 3 .
  • the clamping device configured in the form of a rotary knob is mounted so as to be rotatable about an axis 13 oriented perpendicularly with respect to the longitudinal axis of the clamping means/flat belts and is configured over part of its length in the form of a fork 7 which encompasses the clamping means.
  • the clamping means 4 configured in the form of flat belts are “wound up” and their respective wraparound lengths are reduced.
  • FIG. 4 shows, on its left-hand side, the original state prior to clamping of the flat belts and, on the right-hand side, the state after half a revolution U of the rotary knob and after clamping of the flat belts.
  • the clamping device 5 which is designed as a fork configured over part of its length in the form of a fork 7 , is in this case guided through the eyes 8 of the clamping frame or carrier 3 and mounted there.
  • FIG. 5 also shows, on its left-hand side, a fuel cell pack 1 with attached clamping frame or carrier 3 in the original state prior to clamping of the flat belts and, on the right-hand side, the state after about half a revolution of the rotary knob and after clamping of the flat belts.
  • the clamped flat belts are fixed in the clamped state by the screw 2 with the aid of the clamping device 5 designed as a fork. As already illustrated above, this takes place in that the screw 2 engaging in the clamping frame or carrier 3 is guided through a rotary slot 9 which is provided in a flange 10 belonging to the clamping device 5 . As soon as the screw is tightened, the braced position of the clamping device 5 is fixed.
  • the clamping frame or carrier 3 here comprises the fuel cell pack 1 or the individual fuel cells 1 connected to one another in a modular manner, at least in part, namely the respective upper part of the fuel cell pack 1 /of the individual fuel cells connected to one another in a modular manner.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
US17/594,002 2019-04-01 2020-02-25 Clamping and holding apparatus Pending US20220166046A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019204529.4 2019-04-01
DE102019204529.4A DE102019204529A1 (de) 2019-04-01 2019-04-01 Spann- und Haltevorrichtung
PCT/EP2020/054847 WO2020200589A1 (fr) 2019-04-01 2020-02-25 Dispositif de serrage et de retenue

Publications (1)

Publication Number Publication Date
US20220166046A1 true US20220166046A1 (en) 2022-05-26

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ID=69714020

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/594,002 Pending US20220166046A1 (en) 2019-04-01 2020-02-25 Clamping and holding apparatus

Country Status (5)

Country Link
US (1) US20220166046A1 (fr)
EP (1) EP3947983A1 (fr)
CN (1) CN217107702U (fr)
DE (1) DE102019204529A1 (fr)
WO (1) WO2020200589A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020108136B3 (de) * 2020-03-25 2021-06-17 Daimler Ag Elektrischer Energiespeicher mit einstellbarem Druck auf Batteriezellen und Verfahren zum Betreiben eines elektrischen Energiespeichers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6040072A (en) * 1997-11-19 2000-03-21 Lynntech, Inc. Apparatus and method for compressing a stack of electrochemical cells
CN1585174A (zh) * 2003-08-22 2005-02-23 三洋电机株式会社 燃料电池装置
US20060093890A1 (en) * 2004-10-29 2006-05-04 Steinbroner Matthew P Fuel cell stack compression systems, and fuel cell stacks and fuel cell systems incorporating the same
US20160240881A1 (en) * 2013-10-19 2016-08-18 Daimler Ag Fuel cell stacks with increased natural frequency
WO2020026961A1 (fr) * 2018-07-31 2020-02-06 三洋電機株式会社 Système de batterie, véhicule électrique doté du système de batterie, et dispositif de stockage de puissance
US20230335773A1 (en) * 2020-09-25 2023-10-19 Vitesco Technologies GmbH Fuel cell assembly and method for producing a fuel cell assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1938563U (de) * 1966-03-09 1966-05-12 Linde Ag Vorrichtung zum spannen gelockerter verpakungsbaender.
DE102006059977A1 (de) 2006-12-19 2008-06-26 Daimler Ag Profilunterlage für ein Spannelement
DE202013003672U1 (de) * 2013-04-10 2014-07-11 Reinz-Dichtungs-Gmbh Zellstapel
CN108346814B (zh) * 2018-03-11 2023-12-26 江苏氢璞创能科技有限公司 燃料电池堆的紧固装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6040072A (en) * 1997-11-19 2000-03-21 Lynntech, Inc. Apparatus and method for compressing a stack of electrochemical cells
CN1585174A (zh) * 2003-08-22 2005-02-23 三洋电机株式会社 燃料电池装置
US20060093890A1 (en) * 2004-10-29 2006-05-04 Steinbroner Matthew P Fuel cell stack compression systems, and fuel cell stacks and fuel cell systems incorporating the same
US20160240881A1 (en) * 2013-10-19 2016-08-18 Daimler Ag Fuel cell stacks with increased natural frequency
WO2020026961A1 (fr) * 2018-07-31 2020-02-06 三洋電機株式会社 Système de batterie, véhicule électrique doté du système de batterie, et dispositif de stockage de puissance
US20230335773A1 (en) * 2020-09-25 2023-10-19 Vitesco Technologies GmbH Fuel cell assembly and method for producing a fuel cell assembly

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Machine Translation of CN-1585174-A (Year: 2004) *
Machine Translation of WO-2020026961-A1 (Year: 2020) *

Also Published As

Publication number Publication date
WO2020200589A1 (fr) 2020-10-08
DE102019204529A1 (de) 2020-10-01
CN217107702U (zh) 2022-08-02
EP3947983A1 (fr) 2022-02-09

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